1045801509 has 8 divisors (see below), whose sum is σ = 1442484960. Its totient is φ = 673159536.

The previous prime is 1045801499. The next prime is 1045801511. The reversal of 1045801509 is 9051085401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1045801509 - 2¹² = 1045797413 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1045801509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045801579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6010267 + ... + 6010440.

It is an arithmetic number, because the mean of its divisors is an integer number (180310620).

Almost surely, 2^1045801509 is an apocalyptic number.

It is an amenable number.

1045801509 is a deficient number, since it is larger than the sum of its proper divisors (396683451).

1045801509 is a wasteful number, since it uses less digits than its factorization.

1045801509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12020739.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 1045801509 is about 32338.8544787845. The cubic root of 1045801509 is about 1015.0398389242.

The spelling of 1045801509 in words is "one billion, forty-five million, eight hundred one thousand, five hundred nine".